Siemens Simatic S7-300 CPU 31xC and CPU 31x S7-300 - Manual (Page 183)

Technical data of CPU 31x
7.4 CPU 315-2 DP
CPU 31xC and CPU 31x, Technical data
Manual, Edition 08/2004, A5E00105475-05
7-17
Technical data
Functionality
• MPI Yes
• PROFIBUS DP No
• Point-to-point communication No
MPI
Services
• PG/OP communication Yes
• Routing Yes
• Global data communication Yes
• S7 basic communication Yes
• S7 communication
–
As server
– As client
Yes
Yes
No (but via CP and loadable FBs)
• Transmission rates 187.5 kbps
2nd interface
Type of interface
Integrated RS485 interface
Physics RS 485
electrically isolated Yes
Type of interface Integrated RS485 interface
Interface power supply (15 to 30 VDC) max. 200 mA
Functionality
MPI
No
PROFIBUS DP Yes
Point-to-point communication No
DP master
Services
• PG/OP communication Yes
• Routing Yes
• Global data communication No
• S7 basic communication No
• S7 communication No
• Constant bus cycle time Yes
• SYNC/FREEZE Yes
• DPV1 Yes
Transmission speed Up to 12 Mbps
Number of DP slaves per station 124
Address area max. 244 bytes